Home / 165,615.31-228,549.12-90,163.81

Finding the Fourth Proportional to 165,615.31, 228,549.12 and 90,163.81

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Solution

The fourth proportional to 165,615.31, 228,549.12 and 90,163.81 is: 124,426.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,615.31 : 228,549.12 = 90,163.81 : x
  2. Step 2: Convert to fraction form
    165,615.31/228,549.12 = 90,163.81/x
  3. Step 3: Cross multiply
    165,615.31x = 228,549.12 × 90,163.81
  4. Step 4: Simplify right side
    165,615.31x = 20,606,858,859.97
  5. Step 5: Solve for x
    x = 20,606,858,859.97/165,615.31
  6. Step 6: Final answer
    x = 124,426.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.